Abstract
The carburization behavior of 310 stainless steel has been studied after cyclic exposures to carburizing gas mixtures at elevated temperatures for 500 hr exposures. A thermodynamic analysis indicated that 1000 °C was an approximate critical temperature, below which the environment should result in mixed oxidizing/carburizing behavior while above this temperature, reducing-carburizing behavior should occur. The experimental results agree well with the thermodynamic analysis, at 800 °C in 2% CH4/H2 for 310SS which suffers both external oxidation, carburization, and internal carburization. At 1100 °C in 10% CH4/H2 external carburization occurs and internal carburization becomes less pronounced. Schematics are illustrated to show corrosion mechanisms in various exposure environments.
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Yin, R., Allam, I. & Al-Farayedhi, A. Carburization Behavior of 310 Stainless Steel in CH4/H2 Gas Mixture with Trace Amount of Oxygen. Oxidation of Metals 60, 315–333 (2003). https://doi.org/10.1023/A:1026023403600
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DOI: https://doi.org/10.1023/A:1026023403600